All categories

3 years ago

PLEASE HELP 10 POINTS NEED AN A PLEASE HELP

Mathematics

1 answer:

torisob [31]3 years ago

8 0

The answer is 5 weeks

You simply see where the amount saved in both of them and see when they match.

You might be interested in

Mohamed and Li Jing were asked to find an explicit formula for the sequence -5, -25, -125, -625,....

Nuetrik [128]

Answer:

Li Jing's formula i.e. $\boxed{g_n=-5\cdot \:5^{n-1}}$ is right.

Step-by-step explanation:

Considering the sequence

$-5,\:-25,\:-125,\:-625,...$

A geometric sequence has a constant ratio r and is defined by

$g_n=g_0\cdot r^{n-1}$

$\mathrm{Compute\:the\:ratios\:of\:all\:the\:adjacent\:terms}:\quad \:r=\frac{g_{n+1}}{g_n}$

$\frac{-25}{-5}=5,\:\quad \frac{-125}{-25}=5,\:\quad \frac{-625}{-125}=5$

$\mathrm{The\:ratio\:of\:all\:the\:adjacent\:terms\:is\:the\:same\:and\:equal\:to}$

$r=5$

So, the sequence is geometric.

$\mathrm{The\:first\:element\:of\:the\:sequence\:is}$

$g_1=-5$

$r=5$

$g_n=g_1\cdot r^{n-1}$

$\mathrm{Therefore,\:the\:}n\mathrm{th\:term\:is\:computed\:by}\:$

$g_n=-5\cdot \:5^{n-1}$

Therefore, Li Jing's formula i.e. $\boxed{g_n=-5\cdot \:5^{n-1}}$ is right.

8 0

4 years ago

7 + r = 15 A() 22 B() 8 C() 105 D() 9

guajiro [1.7K]

Answer:

Step-by-step explanation:

7+r=15

-7 -7

r = 8

B.8

5 0

3 years ago

What is the measure of the angle

pav-90 [236]

Answer:

it's 60 degree in my thinking

Step-by-step explanation:

hope this is the answer

8 0

3 years ago

Read 2 more answers

|8m| = 104 absolute value

DENIUS [597]

Answer:

m=13

Step-by-step explanation:

l8ml=104

8m=104

⁻⁻⁻ ⁻⁻⁻

8 8

m=13

6 0

3 years ago

What is the product of 7/8 x 4/7

DIA [1.3K]

Answer:

1/2

Step-by-step explanation:

7x4= 28

8x7= 56

simplify: 28/56=1/2

8 0

3 years ago

Read 2 more answers